WO2018054045A1 - Photovoltaic air conditioning system control parameter determining method and apparatus, and control system - Google Patents

Photovoltaic air conditioning system control parameter determining method and apparatus, and control system Download PDF

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Publication number
WO2018054045A1
WO2018054045A1 PCT/CN2017/080871 CN2017080871W WO2018054045A1 WO 2018054045 A1 WO2018054045 A1 WO 2018054045A1 CN 2017080871 W CN2017080871 W CN 2017080871W WO 2018054045 A1 WO2018054045 A1 WO 2018054045A1
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real
parameter
grid
time
control
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PCT/CN2017/080871
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French (fr)
Chinese (zh)
Inventor
李建华
娄贺伟
刘克勤
倪卫涛
王京
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珠海格力电器股份有限公司
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Priority to CA3034759A priority Critical patent/CA3034759C/en
Priority to US16/327,164 priority patent/US11796194B2/en
Publication of WO2018054045A1 publication Critical patent/WO2018054045A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
    • F24F2005/0067—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy with photovoltaic panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/60—Energy consumption
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

Definitions

  • photovoltaic air-conditioning system As a green energy-saving home appliance that integrates electricity and electricity, photovoltaic air-conditioning system is very popular among people. In order to ensure its normal work, it needs to be able to carry out grid-connected power generation flexibly and friendlyly on the basis of meeting the requirements of its power consumption standards.
  • Currently applied to photovoltaic air conditioning systems is a proportional integral control scheme based on classical control theory. This technical solution is simple and reliable, and is very suitable for product development.
  • the proportional integral control parameters required by the control system based on the classical control theory are heavily dependent on the construction of the mathematical model of the controlled object, that is, the proportional integral control parameter is calculated according to the mathematical model of the pre-built controlled object.
  • Parameters cannot change in accordance with changes in the external environment.
  • the external parameters of the PV air conditioning system are complex and variable, such as the weather, the load of the press and the random variation of the grid-connected inductance, which will have a serious impact on the photovoltaic air-conditioning system as a power-generating integrated device, and the fixed parameters.
  • the control system will be seriously unstable when it is affected by the above, and it cannot meet the control requirements of the power supply.
  • an embodiment of the present invention provides an information transmission method and apparatus, and aims to solve the problem that the information transmission method between the existing electronic device and the user is not high.
  • a method for determining a control parameter of a photovoltaic air conditioning system is applied to a control system of the photovoltaic air conditioning system, and the method for determining a control parameter specifically includes the steps of:
  • the adjustment parameter corresponding to the grid-connected power range is selected to correct the basic control parameter to obtain a target control parameter.
  • determining real-time inductance parameters of the photovoltaic air conditioning system according to the real-time grid-connected power of the photovoltaic air conditioning system including:
  • the real-time inductance parameter determined according to the real-time grid-connected current.
  • the real-time inductance parameter determined according to the real-time grid-connected current includes:
  • a control parameter determining device for a photovoltaic air conditioning system is applied to a control system of the photovoltaic air conditioning system, and the control parameter determining device specifically includes:
  • An inductance parameter determining module configured to determine a real-time inductance parameter of the controlled object of the control system according to the real-time grid-connected power of the photovoltaic air conditioning system;
  • a basic parameter calculation module configured to substitute the real-time inductance parameter into a controlled object of the control system, and calculate a basic control parameter of the control system
  • a target parameter calculation module configured to: when the real-time grid-connected power matches a certain grid-connected power range, select an adjustment parameter corresponding to the grid-connected power range to adjust the control parameter to obtain a target Control parameters.
  • the inductance parameter determining module includes:
  • a grid-connected power acquisition unit configured to acquire real-time grid-connected power of the photovoltaic air-conditioning system
  • a grid-connected current calculation unit configured to calculate a real-time grid-connected current of the photovoltaic air-conditioning system according to the real-time grid-connected power
  • An inductance parameter calculation unit configured to determine the real-time inductance according to the real-time grid-connected current parameter.
  • the inductance parameter calculation unit is specifically configured to use the real-time grid-connected current, and determine the real-time inductance parameter from an inductor current relationship curve of a reactor in the controlled object.
  • a control system for a photovoltaic air conditioning system comprising control parameter determining means, the control parameter determining device comprising an inductance parameter determining module, a basic parameter calculating module, an adjusting parameter preset module and a target parameter calculating module, the inductor
  • the parameter determining module is configured to determine a real-time inductance parameter of the controlled object of the control system according to the real-time grid-connected power of the photovoltaic air conditioning system
  • the basic parameter calculation module is configured to substitute the real-time inductance parameter into the control system
  • the controlled object calculates a basic control parameter of the control system
  • the adjustment parameter preset module is configured to preset a plurality of adjustment parameters corresponding to different grid-connected power ranges
  • the target parameter calculation module is used to When the real-time grid-connected power is matched with a certain of the grid-connected power ranges, the adjustment parameters corresponding to the grid-connected power range are selected to adjust the control parameters to obtain target control parameters, and the control parameters are determined.
  • the device also
  • a grid-connected power receiving port configured to receive the real-time grid-connected power
  • a preset parameter receiving port configured to receive a plurality of the adjustment parameters input by a user
  • a control parameter output port for connecting a proportional integral control unit of the controlled object of the control system, and outputting the target control parameter to the proportional integral control unit.
  • the inductance parameter determining module includes:
  • a grid-connected power acquisition unit configured to acquire real-time grid-connected power of the photovoltaic air-conditioning system
  • a grid-connected current calculation unit configured to calculate a real-time grid-connected current of the photovoltaic air-conditioning system according to the real-time grid-connected power
  • an inductance parameter calculation unit configured to determine the real-time inductance parameter according to the real-time grid-connected current.
  • the inductance parameter calculation unit is specifically configured to use the real-time grid-connected current, and determine the real-time inductance parameter from an inductor current relationship curve of a reactor in the controlled object.
  • Embodiments of the present invention provide a method, a device, and a control system for determining a control parameter of a photovoltaic air conditioning system, and the method and device are applied to a control system of a photovoltaic air conditioning system for determining a target control parameter applied to the control system, specifically
  • the real-time grid-connected power of the photovoltaic air-conditioning system the real-time inductance parameters of the controlled object of the photovoltaic air-conditioning system are determined; the real-time inductance parameters are substituted into the control
  • the controlled object of the system calculates the basic control parameters of the control system; presets a plurality of adjustment parameters respectively corresponding to different grid-connected powers; when the real-time grid-connected power matches a certain grid-connected power, the selection and the grid connection
  • the power corresponding adjustment parameter corrects the basic control parameters to obtain the target control parameters.
  • the target control parameter determined by the present application is not a fixed control parameter, but a dynamic control parameter of the different grid-connected power determined according to different grid-connected powers, and because different grid-connected powers depend on changes in external parameters, the target here
  • the control parameters can adapt to changes in external parameters, which can solve the problem that the current PV air conditioning system cannot meet the requirements of power generation control when the external parameters change.
  • FIG. 1 is a flow chart of an embodiment of a method for determining control parameters of a photovoltaic air conditioning system provided by the present application
  • FIG. 2 is a structural block diagram of an embodiment of a control parameter determining apparatus for a photovoltaic air conditioning system provided by the present application;
  • FIG. 3 is a structural block diagram of an embodiment of a control system for a photovoltaic air conditioning system provided by the present application.
  • FIG. 1 is a flow chart of an embodiment of a method for determining control parameters of a photovoltaic air conditioning system provided by the present application.
  • the control parameter determining method provided in this embodiment is applied to a control system of a photovoltaic air conditioning system for determining a target control parameter, and the target control parameter is used as a proportional integral control of a proportional integral control unit of the control system. parameter.
  • the method for determining the control parameter specifically includes the following steps:
  • S101 Determine a real-time inductance parameter of the controlled object according to the real-time grid-connected power.
  • the real-time grid-connected power refers to the exchange power of the photovoltaic air-conditioning system and the power grid, specifically the power generated when it is in the power generation state, and the power power when it is in the power-on state.
  • the real-time inductance parameters are used here because the inductance of the controlled object of the control system changes with the current, which is also the innovation of this application.
  • the process of specifically obtaining the real-time inductance parameters by using the grid-connected power is as follows:
  • the real-time grid-connected power of the photovoltaic air-conditioning system is obtained, that is, the grid-connected power at the current time, and the grid-connected power is determined by the grid-connected current and the grid-connected voltage, wherein the grid-connected voltage depends on the voltage of the grid connected to the grid.
  • the real-time grid-connected current is calculated according to the real-time grid-connected power, and the real-time grid-connected current is equal to the real-time grid-connected power divided by the current grid-connected voltage.
  • determining the controlled object of the control system according to the real-time grid-connected current and the inductor current relationship curve is an inductance parameter, specifically a real-time inductance parameter of the reactor disposed in the controlled object.
  • the essence here is to replace the real-time inductance parameter as a dynamic parameter with the fixed parameter of the original controlled object, and calculate the current basic control parameter of the controlled object according to the mathematical model of the controlled object containing the dynamic parameter.
  • the calculation of the basic control parameters is the same as the current method of calculating the control parameters according to a fixed mathematical model, and will not be described here.
  • pi is 3.1415926
  • f is the grid-connected power, that is, the real-time frequency of the grid, generally taking 50 Hz
  • L is the above-mentioned real-time inductance parameter.
  • the adjustment parameter may be multiple, corresponding to different grid-connected power ranges, to adjust the basic control parameters for different real-time grid-connected powers.
  • the adjustment parameter k1 when the grid-connected power range is 0 to 4000 W is 1; when the grid-connected power range is 4000 W to 6500 W, the adjustment parameter k2 is 0.8; when the grid-connected power range is 6500 W to 9500 W
  • the adjustment parameter k3 at time is 0.7; when the grid-connected power range exceeds 9500 W, the adjustment parameter k4 is 0.5. .
  • S104 Obtain target control parameters according to real-time grid-connected power and adjustment parameters.
  • the basic control parameter is adjusted by using an adjustment parameter corresponding to the grid-connected power, thereby obtaining a target control parameter.
  • the real-time grid-connected power is 5500 W
  • the real-time grid-connected power is matched to the grid-connected power range of 4000 W to 6500 W.
  • the present embodiment provides a method for determining a control parameter of a photovoltaic air conditioning system, and the method is applied to a control system of a photovoltaic air conditioning system for determining a target control parameter applied to the control system, specifically
  • the real-time grid-connected power of the photovoltaic air-conditioning system the real-time inductance parameters of the controlled object of the photovoltaic air-conditioning system are determined; the real-time inductance parameters are substituted into the controlled object of the control system, and the basic control parameters of the control system are calculated;
  • the target control parameter determined by the present application is not a fixed control parameter, but is based on The dynamic control parameters of the different grid-connected powers determined by different grid-connected powers, and because different grid-connected powers depend on changes in external parameters, the target control parameters here can adapt to changes in external parameters, thereby enabling the current photovoltaic air-conditioning system to be solved. When the external parameters change, the problem of power supply control requirements cannot be met.
  • FIG. 2 is a structural block diagram of an embodiment of a control parameter determining apparatus for a photovoltaic air conditioning system provided by the present application.
  • the control parameter determining apparatus is applied to a control system of a photovoltaic air conditioning system for determining a target control parameter, and the target control parameter is used as a proportional integral control of a proportional integral control unit of the control system. parameter.
  • the control parameter determining device specifically includes an inductance parameter determining module 10, a basic parameter calculating module 20, an adjusting parameter preset module 30, and a target parameter calculating module 40.
  • the inductance parameter calculation module 10 is configured to determine a real-time inductance parameter of the controlled object according to the real-time grid-connected power.
  • the real-time grid-connected power refers to the exchange power of the photovoltaic air-conditioning system and the power grid, specifically the power generated when it is in the power generation state, and the power power when it is in the power-on state.
  • the real-time inductance parameters are used here because the inductance of the controlled object of the control system changes with the current, which is also the innovation of this application.
  • the inductance parameter calculation module 10 includes a grid-connected power acquisition unit 11, a grid-connected current calculation unit 12, and an inductance parameter calculation unit 13.
  • the grid-connected power acquisition unit 11 is configured to obtain the real-time grid-connected power of the photovoltaic air-conditioning system, that is, the grid-connected power at the current time, and the grid-connected power is determined by the grid-connected current and the grid-connected voltage, wherein the grid-connected voltage depends on the connected network. The voltage of the grid.
  • the grid-connected current calculation unit 12 calculates the real-time grid-connected current according to the real-time grid-connected power acquired by the grid-connected power acquisition unit 11, and the real-time grid-connected current is equal to the real-time grid-connected power divided by the current grid-connected voltage.
  • the inductance parameter calculation unit 13 determines, according to the real-time grid-connected current and the inductor current relationship curve, that the controlled object of the control system is an inductance parameter, specifically, is set in the controlled object.
  • the basic parameter calculation module 20 is configured to substitute the real-time inductance parameter into the controlled object to calculate the basic control parameters of the control system.
  • the essence here is to replace the real-time inductance parameter as a dynamic parameter with the fixed parameter of the original controlled object, and calculate the current basic control parameter of the controlled object according to the mathematical model of the controlled object containing the dynamic parameter.
  • the calculation of the basic control parameters is the same as the current method of calculating the control parameters according to a fixed mathematical model, and will not be described here.
  • pi is 3.1415926
  • f is the grid-connected power, that is, the real-time frequency of the grid, generally taking 50 Hz
  • L is the above-mentioned real-time inductance parameter.
  • the adjustment parameter preset module 30 is configured to preset a plurality of adjustment parameters of different grid-connected power ranges according to a user's setting command.
  • the adjustment parameter may be multiple, corresponding to different grid-connected power ranges, to adjust the basic control parameters for different real-time grid-connected powers.
  • the adjustment parameter k1 when the grid-connected power range is 0 to 4000 W is 1; when the grid-connected power range is 4000 W to 6500 W, the adjustment parameter k2 is 0.8; when the grid-connected power range is 6500 W to 9500 W
  • the adjustment parameter k3 at time is 0.7; when the grid-connected power range exceeds 9500 W, the adjustment parameter k4 is 0.5. .
  • the target parameter calculation module 40 obtains the target control parameters according to the real-time grid-connected power and the adjustment parameters.
  • the basic control parameter is adjusted by using an adjustment parameter corresponding to the grid-connected power, thereby obtaining a target control parameter.
  • the real-time grid-connected power is 5500 W
  • the real-time grid-connected power is matched to the grid-connected power range of 4000 W to 6500 W.
  • the target control parameter it can also be said to be the target proportional integral control parameter. Since Kp and Ki are decoupled in actual control, they are utilized.
  • the present embodiment provides a control parameter determining device for a photovoltaic air conditioning system, and the device is applied to a control system of a photovoltaic air conditioning system for determining a target control parameter applied to the control system, specifically
  • the real-time grid-connected power of the photovoltaic air-conditioning system the real-time inductance parameters of the controlled object of the photovoltaic air-conditioning system are determined; the real-time inductance parameters are substituted into the controlled object of the control system, and the basic control parameters of the control system are calculated;
  • the target control parameter determined by the present application is not a fixed control parameter, but a dynamic control parameter of the different grid-connected power determined according to different grid-connected powers, and because different grid-connected powers depend on changes in external parameters, the target here
  • the control parameters can adapt to changes in external parameters, which can solve the problem that the current PV air conditioning system cannot meet the requirements of power generation control when the external parameters change.
  • FIG. 3 is a structural block diagram of an embodiment of a control system for a photovoltaic air conditioning system provided by the present application.
  • the control system provided in this embodiment is used to control the operation of the photovoltaic air conditioning system, and the control system includes a control parameter control device, and the control parameter determining device 100 is configured to determine a target control parameter, and the target control The parameters are used as proportional integral control parameters for the proportional integral control unit of the control system.
  • the control parameter determining device specifically includes an inductance parameter determining module 10, a basic parameter calculating module 20, an adjusting parameter preset module 30, and a target parameter calculating module 40.
  • the inductance parameter calculation module 10 is configured to determine a real-time inductance parameter of the controlled object according to the real-time grid-connected power.
  • the real-time grid-connected power refers to the exchange power of the photovoltaic air-conditioning system and the power grid, specifically the power generated when it is in the power generation state, and the power power when it is in the power-on state.
  • the real-time inductance parameter is used because the inductance of the controlled object of the control system changes with the current, which is also the innovation of the present application.
  • the inductance parameter calculation module 10 includes a grid-connected power acquisition unit 11, a grid-connected current calculation unit 12, and an inductance parameter calculation unit 13.
  • the grid-connected power acquisition unit 11 is configured to obtain the real-time grid-connected power of the photovoltaic air-conditioning system, that is, the grid-connected power at the current time, and the grid-connected power is determined by the grid-connected current and the grid-connected voltage, wherein the grid-connected voltage depends on the connected network. The voltage of the grid.
  • the grid-connected current calculation unit 12 calculates the real-time grid-connected current according to the real-time grid-connected power acquired by the grid-connected power acquisition unit 11, and the real-time grid-connected current is equal to the real-time grid-connected power divided by the current grid-connected voltage.
  • the inductance parameter calculation unit 13 determines, according to the real-time grid-connected current and the inductor current relationship curve, that the controlled object of the control system is an inductance parameter, specifically a real-time inductance parameter of the reactor disposed in the controlled object.
  • the basic parameter calculation module 20 is configured to substitute the real-time inductance parameter into the controlled object to calculate the basic control parameters of the control system.
  • the essence here is to replace the real-time inductance parameter as a dynamic parameter with the fixed parameter of the original controlled object, and calculate the current basic control parameter of the controlled object according to the mathematical model of the controlled object containing the dynamic parameter.
  • the calculation of the basic control parameters is the same as the current method of calculating the control parameters according to a fixed mathematical model, and will not be described here.
  • pi is 3.1415926
  • f is the grid-connected power, that is, the real-time frequency of the grid, generally taking 50 Hz
  • L is the above-mentioned real-time inductance parameter.
  • the adjustment parameter preset module 30 is configured to preset a plurality of adjustment parameters of different grid-connected power ranges according to a user's setting command.
  • the adjustment parameter may be multiple, corresponding to different grid-connected power ranges, to adjust the basic control parameters for different real-time grid-connected powers.
  • the adjustment parameter k1 when the grid-connected power range is 0-4000 W is 1; when the grid-connected power range is 4000--6500 W, the adjustment parameter k2 is 0.8; The adjustment parameter k3 when the power range is from 6500W to 9500W is 0.7; when the grid-connected power range exceeds 9500W, the adjustment parameter k4 is 0.5. .
  • the target parameter calculation module 40 obtains the target control parameters according to the real-time grid-connected power and the adjustment parameters.
  • the basic control parameter is adjusted by using an adjustment parameter corresponding to the grid-connected power, thereby obtaining a target control parameter.
  • the real-time grid-connected power is 5500 W
  • the real-time grid-connected power is matched to the grid-connected power range of 4000 W to 6500 W.
  • control parameter determining apparatus in this embodiment further includes a grid-connected power receiving port 101, a preset parameter receiving port 102, and a control parameter output port 103.
  • the grid-connected power receiving port 101 is connected to the converter device of the photovoltaic air conditioning system for receiving real-time grid-connected power of the converter device.
  • the preset parameter receiving port 102 is configured to receive a plurality of adjustment parameters input by the user.
  • the control parameter output port 103 is for connecting a proportional integral control unit of the controlled object of the control system, and outputs the target control parameter to the proportional integral control unit.
  • the present embodiment provides a control system for a photovoltaic air conditioning system, the control system including a control parameter determining device for determining a target control parameter applied to the control system, Specifically, according to the real-time grid-connected power of the photovoltaic air-conditioning system, the real-time inductance parameter of the controlled object of the photovoltaic air-conditioning system is determined; the real-time inductance parameter is substituted into the controlled object of the control system, and the basic control parameters of the control system are calculated; The adjustment parameters corresponding to different grid-connected powers respectively; when the real-time grid-connected power matches a certain grid-connected power, the adjustment parameters corresponding to the grid-connected power are selected to correct the basic control parameters, and the target control parameters are obtained.
  • the target control parameter determined by the present application is not a fixed control parameter, but a dynamic control parameter of the different grid-connected power determined according to different grid-connected powers.
  • the same grid-connected power depends on the change of external parameters, so the target control parameters here can adapt to changes in external parameters, which can solve the problem that the current PV air-conditioning system can not meet the requirements of power-use control when the external parameters change.

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Abstract

A photovoltaic air conditioning system control parameter determining method, specifically comprising: on the basis of real-time grid power of the photovoltaic air conditioning system, determining real-time inductance parameters of a controlled object of the photovoltaic air conditioning system; substituting the real-time inductance parameters for the controlled object of the control system, and calculating a basic control parameter of the control system; pre-setting a plurality of adjustment parameters respectively corresponding to different grid powers; and when the real-time grid power matches any one of said grid powers, selecting the adjustment parameter corresponding to said grid power to revise the basic control parameter in order to obtain a target control parameter. Also disclosed are a photovoltaic air conditioning system control parameter determining apparatus and a control system, the method and the apparatus being used in the control system of the photovoltaic air conditioning system, and being used for determining a target control parameter to be used in the control system.

Description

一种光伏空调***的控制参数确定方法、装置和控制***Method, device and control system for determining control parameters of photovoltaic air conditioning system 技术领域Technical field
本申请要求于2016年9月21日提交中国专利局、申请号为201610838835.3、发明名称为“一种光伏空调***的控制参数确定方法、装置和控制***”的国内申请的优先权，其全部内容通过引用结合在本申请中。This application claims priority to the domestic application of the Chinese Patent Office, application number 201610838835.3, and the invention name "a method, device and control system for determining control parameters of a photovoltaic air conditioning system" on September 21, 2016. This is incorporated herein by reference.
背景技术Background technique
光伏空调***作为发用电一体化的绿色节能家电产品，深受人们的欢迎，为了保证其正常工作，在满足其用电标准要求的基础上，还需其能够柔性友好地进行并网发电。目前应用于光伏空调***的是基于经典控制理论的比例积分控制方案，该技术方案简单可靠，非常适合产品开发。As a green energy-saving home appliance that integrates electricity and electricity, photovoltaic air-conditioning system is very popular among people. In order to ensure its normal work, it needs to be able to carry out grid-connected power generation flexibly and friendlyly on the basis of meeting the requirements of its power consumption standards. Currently applied to photovoltaic air conditioning systems is a proportional integral control scheme based on classical control theory. This technical solution is simple and reliable, and is very suitable for product development.
但是，基于该经典控制理论的控制***所需的比例积分控制参数，则严重依赖受控对象数学模型的搭建，即该比例积分控制参数是根据预先搭建的受控对象的数学模型进行计算得到固定参数，不能跟随外界环境变化而变化。但是在实际应用中，光伏空调***的外界参数复杂多变，如天气、压机负载及并网电感随机变化，都会对作为发用电一体化设备的光伏空调***造成严重的影响，而固定参数的控制***则在受到上述影响时控制效果会严重失稳，无法满足发用电的控制要求。However, the proportional integral control parameters required by the control system based on the classical control theory are heavily dependent on the construction of the mathematical model of the controlled object, that is, the proportional integral control parameter is calculated according to the mathematical model of the pre-built controlled object. Parameters cannot change in accordance with changes in the external environment. However, in practical applications, the external parameters of the PV air conditioning system are complex and variable, such as the weather, the load of the press and the random variation of the grid-connected inductance, which will have a serious impact on the photovoltaic air-conditioning system as a power-generating integrated device, and the fixed parameters. The control system will be seriously unstable when it is affected by the above, and it cannot meet the control requirements of the power supply.
发明内容Summary of the invention
有鉴于此，本发明实施例提供了一种信息传递方法及装置，目的在于解决现有的电子设备与用户间的信息传递方法安全性不高的问题。In view of this, an embodiment of the present invention provides an information transmission method and apparatus, and aims to solve the problem that the information transmission method between the existing electronic device and the user is not high.
为了实现上述目的，本发明实施例提供了以下技术方案：In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
一种光伏空调***的控制参数确定方法，应用于所述光伏空调***的控制***，所述控制参数确定方法具体包括步骤：A method for determining a control parameter of a photovoltaic air conditioning system is applied to a control system of the photovoltaic air conditioning system, and the method for determining a control parameter specifically includes the steps of:
根据所述光伏空调***的实时并网功率，确定所述控制***的受控对象的实时电感参数；Determining a real-time inductance parameter of the controlled object of the control system according to the real-time grid-connected power of the photovoltaic air conditioning system;
将所述实时电感参数代入所述控制***的受控对象，计算出所述控制 ***的基本控制参数；Substituting the real-time inductance parameter into a controlled object of the control system to calculate the control Basic control parameters of the system;
预设多个分别与不同并网功率范围相对应的调整参数；Presetting a plurality of adjustment parameters respectively corresponding to different grid-connected power ranges;
当所述实时并网功率与某个所述某个并网功率范围相匹配时，选取与所述并网功率范围相对应的调整参数对所述基本控制参数进行修正，得到目标控制参数。And when the real-time grid-connected power is matched with a certain one of the grid-connected power ranges, the adjustment parameter corresponding to the grid-connected power range is selected to correct the basic control parameter to obtain a target control parameter.
可选的，所述根据所述光伏空调***的实时并网功率，确定所述光伏空调***的实时电感参数，包括：Optionally, determining real-time inductance parameters of the photovoltaic air conditioning system according to the real-time grid-connected power of the photovoltaic air conditioning system, including:
获取所述光伏空调***的实时并网功率；Obtaining real-time grid-connected power of the photovoltaic air conditioning system;
根据所述实时并网功率计算出所述光伏空调***的实时并网电流；Calculating a real-time grid-connected current of the photovoltaic air-conditioning system according to the real-time grid-connected power;
根据所述实时并网电流确定的所述实时电感参数。The real-time inductance parameter determined according to the real-time grid-connected current.
可选的，所述根据所述实时并网电流确定的所述实时电感参数，包括：Optionally, the real-time inductance parameter determined according to the real-time grid-connected current includes:
根据所述实时并网电流，从所述受控对象中电抗器的电感电流关系曲线中确定所述实时电感参数。And determining the real-time inductance parameter from an inductor current relationship curve of the reactor in the controlled object according to the real-time grid-connected current.
一种光伏空调***的控制参数确定装置，应用于所述光伏空调***的控制***，所述控制参数确定装置具体包括：A control parameter determining device for a photovoltaic air conditioning system is applied to a control system of the photovoltaic air conditioning system, and the control parameter determining device specifically includes:
电感参数确定模块，用于根据所述光伏空调***的实时并网功率，确定所述控制***的受控对象的实时电感参数；An inductance parameter determining module, configured to determine a real-time inductance parameter of the controlled object of the control system according to the real-time grid-connected power of the photovoltaic air conditioning system;
基本参数计算模块，用于将所述实时电感参数代入所述控制***的受控对象，计算出所述控制***的基本控制参数；a basic parameter calculation module, configured to substitute the real-time inductance parameter into a controlled object of the control system, and calculate a basic control parameter of the control system;
调整参数预置模块，用于预设多个与不同并网功率范围相对应的调整参数；Adjusting a parameter preset module for presetting a plurality of adjustment parameters corresponding to different grid-connected power ranges;
目标参数计算模块，用于当所述实时并网功率与某个所述并网功率范围相匹配时，选取与所述并网功率范围相对应的调整参数对所述控制参数进行调整，得到目标控制参数。a target parameter calculation module, configured to: when the real-time grid-connected power matches a certain grid-connected power range, select an adjustment parameter corresponding to the grid-connected power range to adjust the control parameter to obtain a target Control parameters.
可选的，所述电感参数确定模块包括：Optionally, the inductance parameter determining module includes:
并网功率获取单元，用于获取所述光伏空调***的实时并网功率；a grid-connected power acquisition unit, configured to acquire real-time grid-connected power of the photovoltaic air-conditioning system;
并网电流计算单元，用于根据所述实时并网功率计算出所述光伏空调***的实时并网电流；a grid-connected current calculation unit, configured to calculate a real-time grid-connected current of the photovoltaic air-conditioning system according to the real-time grid-connected power;
电感参数计算单元，用于根据所述实时并网电流确定的所述实时电感 参数。An inductance parameter calculation unit, configured to determine the real-time inductance according to the real-time grid-connected current parameter.
可选的，所述电感参数计算单元具体用于所述实时并网电流，从所述受控对象中电抗器的电感电流关系曲线中确定所述实时电感参数。Optionally, the inductance parameter calculation unit is specifically configured to use the real-time grid-connected current, and determine the real-time inductance parameter from an inductor current relationship curve of a reactor in the controlled object.
一种光伏空调***的控制***，所述控制***包括控制参数确定装置，所述控制参数确定装置包括电感参数确定模块、基本参数计算模块、调整参数预置模块和目标参数计算模块，所述电感参数确定模块用于根据所述光伏空调***的实时并网功率，确定所述控制***的受控对象的实时电感参数；所述基本参数计算模块用于将所述实时电感参数代入所述控制***的受控对象，计算出所述控制***的基本控制参数；所述调整参数预置模块用于预设多个与不同并网功率范围相对应的调整参数；所述目标参数计算模块用于当所述实时并网功率与某个所述并网功率范围相匹配时，选取与所述并网功率范围相对应的调整参数对所述控制参数进行调整，得到目标控制参数，所述控制参数确定装置还包括：A control system for a photovoltaic air conditioning system, the control system comprising control parameter determining means, the control parameter determining device comprising an inductance parameter determining module, a basic parameter calculating module, an adjusting parameter preset module and a target parameter calculating module, the inductor The parameter determining module is configured to determine a real-time inductance parameter of the controlled object of the control system according to the real-time grid-connected power of the photovoltaic air conditioning system; the basic parameter calculation module is configured to substitute the real-time inductance parameter into the control system The controlled object calculates a basic control parameter of the control system; the adjustment parameter preset module is configured to preset a plurality of adjustment parameters corresponding to different grid-connected power ranges; the target parameter calculation module is used to When the real-time grid-connected power is matched with a certain of the grid-connected power ranges, the adjustment parameters corresponding to the grid-connected power range are selected to adjust the control parameters to obtain target control parameters, and the control parameters are determined. The device also includes:
并网功率接收端口，用于接收所述实时并网功率；a grid-connected power receiving port, configured to receive the real-time grid-connected power;
预置参数接收端口，用于接收用户输入的多个所述调整参数；a preset parameter receiving port, configured to receive a plurality of the adjustment parameters input by a user;
控制参数输出端口，用于连接所述控制***的受控对象的比例积分控制单元，并将所述目标控制参数输出到所述比例积分控制单元。And a control parameter output port for connecting a proportional integral control unit of the controlled object of the control system, and outputting the target control parameter to the proportional integral control unit.
可选的，所述电感参数确定模块包括：Optionally, the inductance parameter determining module includes:
并网功率获取单元，用于获取所述光伏空调***的实时并网功率；a grid-connected power acquisition unit, configured to acquire real-time grid-connected power of the photovoltaic air-conditioning system;
并网电流计算单元，用于根据所述实时并网功率计算出所述光伏空调***的实时并网电流；a grid-connected current calculation unit, configured to calculate a real-time grid-connected current of the photovoltaic air-conditioning system according to the real-time grid-connected power;
电感参数计算单元，用于根据所述实时并网电流确定的所述实时电感参数。And an inductance parameter calculation unit, configured to determine the real-time inductance parameter according to the real-time grid-connected current.
可选的，所述电感参数计算单元具体用于所述实时并网电流，从所述受控对象中电抗器的电感电流关系曲线中确定所述实时电感参数。Optionally, the inductance parameter calculation unit is specifically configured to use the real-time grid-connected current, and determine the real-time inductance parameter from an inductor current relationship curve of a reactor in the controlled object.
本发明实施例提供了一种光伏空调***的控制参数确定方法、装置和控制***，该方法和装置应用于光伏空调***的控制***，用于确定应用于该控制***的目标控制参数，具体为根据光伏空调***的实时并网功率，确定光伏空调***的受控对象的实时电感参数；将实时电感参数代入控制 ***的受控对象，计算出控制***的基本控制参数；预设多个分别与不同并网功率相对应的调整参数；当实时并网功率与某个并网功率相匹配时，选取与并网功率相对应的调整参数对基本控制参数进行修正，得到目标控制参数。由于本申请所确定的目标控制参数不是固定控制参数，而是根据不同并网功率确定的该不同并网功率的动态控制参数，还由于不同并网功率取决于外界参数的变化，因此这里的目标控制参数能够适应外界参数变化，从而能够解决目前的光伏空调***在外界参数变化时无法满足发用电控制要求的问题。Embodiments of the present invention provide a method, a device, and a control system for determining a control parameter of a photovoltaic air conditioning system, and the method and device are applied to a control system of a photovoltaic air conditioning system for determining a target control parameter applied to the control system, specifically According to the real-time grid-connected power of the photovoltaic air-conditioning system, the real-time inductance parameters of the controlled object of the photovoltaic air-conditioning system are determined; the real-time inductance parameters are substituted into the control The controlled object of the system calculates the basic control parameters of the control system; presets a plurality of adjustment parameters respectively corresponding to different grid-connected powers; when the real-time grid-connected power matches a certain grid-connected power, the selection and the grid connection The power corresponding adjustment parameter corrects the basic control parameters to obtain the target control parameters. Since the target control parameter determined by the present application is not a fixed control parameter, but a dynamic control parameter of the different grid-connected power determined according to different grid-connected powers, and because different grid-connected powers depend on changes in external parameters, the target here The control parameters can adapt to changes in external parameters, which can solve the problem that the current PV air conditioning system cannot meet the requirements of power generation control when the external parameters change.
附图说明DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.
图1为本申请提供的一种光伏空调***的控制参数确定方法实施例的流程图；1 is a flow chart of an embodiment of a method for determining control parameters of a photovoltaic air conditioning system provided by the present application;
图2为本申请提供的一种光伏空调***的控制参数确定装置实施例的结构框图；2 is a structural block diagram of an embodiment of a control parameter determining apparatus for a photovoltaic air conditioning system provided by the present application;
图3为本申请提供的一种光伏空调***的控制***实施例的结构框图。3 is a structural block diagram of an embodiment of a control system for a photovoltaic air conditioning system provided by the present application.
具体实施方式detailed description
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。 The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.
实施例一Embodiment 1
图1为本申请提供的一种光伏空调***的控制参数确定方法实施例的流程图。1 is a flow chart of an embodiment of a method for determining control parameters of a photovoltaic air conditioning system provided by the present application.
如图1所示，本实施例提供的控制参数确定方法应用于光伏空调***的控制***，用于确定目标控制参数，该目标控制参数用于作为该控制***的比例积分控制单元的比例积分控制参数。这种控制参数确定方法具体包括如下步骤：As shown in FIG. 1 , the control parameter determining method provided in this embodiment is applied to a control system of a photovoltaic air conditioning system for determining a target control parameter, and the target control parameter is used as a proportional integral control of a proportional integral control unit of the control system. parameter. The method for determining the control parameter specifically includes the following steps:
S101：根据实时并网功率确定受控对象的实时电感参数。S101: Determine a real-time inductance parameter of the controlled object according to the real-time grid-connected power.
这里实时并网功率是指该光伏空调***与电网的交换功率，具体是指当其处于发电状态时的发电功率，当其处于用电状态时的用电功率。这里采用实时电感参数是因为控制***的受控对象的电感会随着电流的变化而变化，这也是本申请的创新性所在。这里，具体利用并网功率获取实时电感参数的过程具体如下：Here, the real-time grid-connected power refers to the exchange power of the photovoltaic air-conditioning system and the power grid, specifically the power generated when it is in the power generation state, and the power power when it is in the power-on state. The real-time inductance parameters are used here because the inductance of the controlled object of the control system changes with the current, which is also the innovation of this application. Here, the process of specifically obtaining the real-time inductance parameters by using the grid-connected power is as follows:
首先，获取该光伏空调***的实时并网功率，即当前时刻的并网功率，并网功率决定于并网电流和并网电压，其中并网电压取决于所并网的电网的电压。First, the real-time grid-connected power of the photovoltaic air-conditioning system is obtained, that is, the grid-connected power at the current time, and the grid-connected power is determined by the grid-connected current and the grid-connected voltage, wherein the grid-connected voltage depends on the voltage of the grid connected to the grid.
然后，基于上述分析，根据该实时并网功率计算出实时并网电流，实时并网电流等于实时并网功率除以当前并网电压。Then, based on the above analysis, the real-time grid-connected current is calculated according to the real-time grid-connected power, and the real-time grid-connected current is equal to the real-time grid-connected power divided by the current grid-connected voltage.
最后，根据该实时并网电流和电感电流关系曲线确定该控制***的受控对象的是电感参数，具体为设置在该受控对象内的电抗器的实时电感参数。该关系曲线为L＝a*I，其中L为该实时电感参数，a为该电抗器的电感电流系数，I为该实时并网电流。Finally, determining the controlled object of the control system according to the real-time grid-connected current and the inductor current relationship curve is an inductance parameter, specifically a real-time inductance parameter of the reactor disposed in the controlled object. The relationship curve is L=a*I, where L is the real-time inductance parameter, a is the inductor current coefficient of the reactor, and I is the real-time grid-connected current.
S102：将实时电感参数代入受控对象，计算出控制***的基本控制参数。S102: Substituting real-time inductance parameters into the controlled object to calculate basic control parameters of the control system.
这里的实质是将该实时电感参数作为动态参数替代原有受控对象的固定参数，并根据包含该动态参数的受控对象的数学模型计算出该受控对象当前的基本控制参数。对基本控制参数的计算与目前根据固定的数学模型计算控制参数的方法相同，这里就不再赘述。 The essence here is to replace the real-time inductance parameter as a dynamic parameter with the fixed parameter of the original controlled object, and calculate the current basic control parameter of the controlled object according to the mathematical model of the controlled object containing the dynamic parameter. The calculation of the basic control parameters is the same as the current method of calculating the control parameters according to a fixed mathematical model, and will not be described here.
例如，可以将2*pi*f*L代入该受控对象，从而得到基本的比例积分控制参数Kp＝1.05和Ki＝0.4。其中pi取3.1415926；f为并网功率，即电网的实时频率，一般取50赫兹；L即为上述的实时电感参数。For example, 2*pi*f*L can be substituted into the controlled object, thereby obtaining basic proportional integral control parameters Kp=1.05 and Ki=0.4. Where pi is 3.1415926; f is the grid-connected power, that is, the real-time frequency of the grid, generally taking 50 Hz; L is the above-mentioned real-time inductance parameter.
S103：预设多个与不同并网功率范围的调整参数。S103: preset a plurality of adjustment parameters with different grid-connected power ranges.
该调整参数可以为多个，分别对应于不同的并网功率范围，以针对不同的实时并网功率对该基本控制参数进行调整。The adjustment parameter may be multiple, corresponding to different grid-connected power ranges, to adjust the basic control parameters for different real-time grid-connected powers.
例如，本实施例中选取当并网功率范围为0～4000W时的调整参数k1为1；当并网功率范围为4000W～6500W时的调整参数k2为0.8；当并网功率范围为6500W～9500W时的调整参数k3为0.7；当并网功率范围超出9500W时的调整参数k4为0.5。。For example, in this embodiment, the adjustment parameter k1 when the grid-connected power range is 0 to 4000 W is 1; when the grid-connected power range is 4000 W to 6500 W, the adjustment parameter k2 is 0.8; when the grid-connected power range is 6500 W to 9500 W The adjustment parameter k3 at time is 0.7; when the grid-connected power range exceeds 9500 W, the adjustment parameter k4 is 0.5. .
S104：根据实时并网功率和调整参数得到目标控制参数。S104: Obtain target control parameters according to real-time grid-connected power and adjustment parameters.
具体为当实时并网功率与上述多个并网功率中某个并网功率相匹配时，利用与该并网功率相对应的调整参数对上述基本控制参数进行调整，从而得到目标控制参数。Specifically, when the real-time grid-connected power matches one of the plurality of grid-connected powers, the basic control parameter is adjusted by using an adjustment parameter corresponding to the grid-connected power, thereby obtaining a target control parameter.
例如，当实时并网功率为5500W时，与该实时并网功率匹配的是并网功率范围是4000W～6500W，此时选取调整参数k2＝0.8，然后利用哎调整参数k2对基本控制参数进行修正，从而得到目标控制参数，也可以说是目标比例积分控制参数。由于Kp和Ki在实际控制中是除的关系，因此利用该调整参数单独对比例参数Kp进行修正即可，从而得到目标比例控制参数Kp’和目标积分控制参数Ki’，其中Ki＝Ki’。For example, when the real-time grid-connected power is 5500 W, the real-time grid-connected power is matched to the grid-connected power range of 4000 W to 6500 W. At this time, the adjustment parameter k2=0.8 is selected, and then the basic control parameters are corrected by using the 哎adjustment parameter k2. In order to obtain the target control parameter, it can also be said to be the target proportional integral control parameter. Since Kp and Ki are divided in actual control, the proportional parameter Kp can be separately corrected by using the adjustment parameter, thereby obtaining the target proportional control parameter Kp' and the target integral control parameter Ki', where Ki = Ki'.
从上述技术方案可以看出，本实施例提供了一种光伏空调***的控制参数确定方法，该方法应用于光伏空调***的控制***，用于确定应用于该控制***的目标控制参数，具体为根据光伏空调***的实时并网功率，确定光伏空调***的受控对象的实时电感参数；将实时电感参数代入控制***的受控对象，计算出控制***的基本控制参数；预设多个分别与不同并网功率相对应的调整参数；当实时并网功率与某个并网功率相匹配时，选取与并网功率相对应的调整参数对基本控制参数进行修正，得到目标控制参数。由于本申请所确定的目标控制参数不是固定控制参数，而是根据 不同并网功率确定的该不同并网功率的动态控制参数，还由于不同并网功率取决于外界参数的变化，因此这里的目标控制参数能够适应外界参数变化，从而能够解决目前的光伏空调***在外界参数变化时无法满足发用电控制要求的问题。It can be seen from the above technical solution that the present embodiment provides a method for determining a control parameter of a photovoltaic air conditioning system, and the method is applied to a control system of a photovoltaic air conditioning system for determining a target control parameter applied to the control system, specifically According to the real-time grid-connected power of the photovoltaic air-conditioning system, the real-time inductance parameters of the controlled object of the photovoltaic air-conditioning system are determined; the real-time inductance parameters are substituted into the controlled object of the control system, and the basic control parameters of the control system are calculated; The adjustment parameters corresponding to different grid-connected powers; when the real-time grid-connected power matches a certain grid-connected power, the adjustment parameters corresponding to the grid-connected power are selected to correct the basic control parameters, and the target control parameters are obtained. Since the target control parameter determined by the present application is not a fixed control parameter, but is based on The dynamic control parameters of the different grid-connected powers determined by different grid-connected powers, and because different grid-connected powers depend on changes in external parameters, the target control parameters here can adapt to changes in external parameters, thereby enabling the current photovoltaic air-conditioning system to be solved. When the external parameters change, the problem of power supply control requirements cannot be met.
实施例二Embodiment 2
图2为本申请提供的一种光伏空调***的控制参数确定装置实施例的结构框图。2 is a structural block diagram of an embodiment of a control parameter determining apparatus for a photovoltaic air conditioning system provided by the present application.
如图2所示，本实施例提供的控制参数确定装置应用于光伏空调***的控制***，用于确定目标控制参数，该目标控制参数用于作为该控制***的比例积分控制单元的比例积分控制参数。这种控制参数确定装置具体包括电感参数确定模块10、基本参数计算模块20、调整参数预置模块30和目标参数计算模块40。As shown in FIG. 2, the control parameter determining apparatus provided in this embodiment is applied to a control system of a photovoltaic air conditioning system for determining a target control parameter, and the target control parameter is used as a proportional integral control of a proportional integral control unit of the control system. parameter. The control parameter determining device specifically includes an inductance parameter determining module 10, a basic parameter calculating module 20, an adjusting parameter preset module 30, and a target parameter calculating module 40.
电感参数计算模块10用于根据实时并网功率确定受控对象的实时电感参数。The inductance parameter calculation module 10 is configured to determine a real-time inductance parameter of the controlled object according to the real-time grid-connected power.
这里实时并网功率是指该光伏空调***与电网的交换功率，具体是指当其处于发电状态时的发电功率，当其处于用电状态时的用电功率。这里采用实时电感参数是因为控制***的受控对象的电感会随着电流的变化而变化，这也是本申请的创新性所在。这里，该电感参数计算模块10包括并网功率获取单元11、并网电流计算单元12和电感参数计算单元13。Here, the real-time grid-connected power refers to the exchange power of the photovoltaic air-conditioning system and the power grid, specifically the power generated when it is in the power generation state, and the power power when it is in the power-on state. The real-time inductance parameters are used here because the inductance of the controlled object of the control system changes with the current, which is also the innovation of this application. Here, the inductance parameter calculation module 10 includes a grid-connected power acquisition unit 11, a grid-connected current calculation unit 12, and an inductance parameter calculation unit 13.
并网功率获取单元11用于获取该光伏空调***的实时并网功率，即当前时刻的并网功率，并网功率决定于并网电流和并网电压，其中并网电压取决于所并网的电网的电压。The grid-connected power acquisition unit 11 is configured to obtain the real-time grid-connected power of the photovoltaic air-conditioning system, that is, the grid-connected power at the current time, and the grid-connected power is determined by the grid-connected current and the grid-connected voltage, wherein the grid-connected voltage depends on the connected network. The voltage of the grid.
基于上述分析，并网电流计算单元12根据并网功率获取单元11获取的实时并网功率计算出实时并网电流，实时并网电流等于实时并网功率除以当前并网电压。Based on the above analysis, the grid-connected current calculation unit 12 calculates the real-time grid-connected current according to the real-time grid-connected power acquired by the grid-connected power acquisition unit 11, and the real-time grid-connected current is equal to the real-time grid-connected power divided by the current grid-connected voltage.
最后，电感参数计算单元13则根据该实时并网电流和电感电流关系曲线确定该控制***的受控对象的是电感参数，具体为设置在该受控对象内 的电抗器的实时电感参数。该关系曲线为L＝a*I，其中L为该实时电感参数，a为该电抗器的电感电流系数，I为该实时并网电流。Finally, the inductance parameter calculation unit 13 determines, according to the real-time grid-connected current and the inductor current relationship curve, that the controlled object of the control system is an inductance parameter, specifically, is set in the controlled object. Real-time inductance parameters of the reactor. The relationship curve is L=a*I, where L is the real-time inductance parameter, a is the inductor current coefficient of the reactor, and I is the real-time grid-connected current.
基本参数计算模块20用于将实时电感参数代入受控对象，计算出控制***的基本控制参数。The basic parameter calculation module 20 is configured to substitute the real-time inductance parameter into the controlled object to calculate the basic control parameters of the control system.
这里的实质是将该实时电感参数作为动态参数替代原有受控对象的固定参数，并根据包含该动态参数的受控对象的数学模型计算出该受控对象当前的基本控制参数。对基本控制参数的计算与目前根据固定的数学模型计算控制参数的方法相同，这里就不再赘述。The essence here is to replace the real-time inductance parameter as a dynamic parameter with the fixed parameter of the original controlled object, and calculate the current basic control parameter of the controlled object according to the mathematical model of the controlled object containing the dynamic parameter. The calculation of the basic control parameters is the same as the current method of calculating the control parameters according to a fixed mathematical model, and will not be described here.
例如，可以将2*pi*f*L代入该受控对象，从而得到基本的比例积分控制参数Kp＝1.05和Ki＝0.4。其中pi取3.1415926；f为并网功率，即电网的实时频率，一般取50赫兹；L即为上述的实时电感参数。For example, 2*pi*f*L can be substituted into the controlled object, thereby obtaining basic proportional integral control parameters Kp=1.05 and Ki=0.4. Where pi is 3.1415926; f is the grid-connected power, that is, the real-time frequency of the grid, generally taking 50 Hz; L is the above-mentioned real-time inductance parameter.
调整参数预置模块30用于根据用户的设置命令预设多个与不同并网功率范围的调整参数。The adjustment parameter preset module 30 is configured to preset a plurality of adjustment parameters of different grid-connected power ranges according to a user's setting command.
该调整参数可以为多个，分别对应于不同的并网功率范围，以针对不同的实时并网功率对该基本控制参数进行调整。The adjustment parameter may be multiple, corresponding to different grid-connected power ranges, to adjust the basic control parameters for different real-time grid-connected powers.
例如，本实施例中选取当并网功率范围为0～4000W时的调整参数k1为1；当并网功率范围为4000W～6500W时的调整参数k2为0.8；当并网功率范围为6500W～9500W时的调整参数k3为0.7；当并网功率范围超出9500W时的调整参数k4为0.5。。For example, in this embodiment, the adjustment parameter k1 when the grid-connected power range is 0 to 4000 W is 1; when the grid-connected power range is 4000 W to 6500 W, the adjustment parameter k2 is 0.8; when the grid-connected power range is 6500 W to 9500 W The adjustment parameter k3 at time is 0.7; when the grid-connected power range exceeds 9500 W, the adjustment parameter k4 is 0.5. .
目标参数计算模块40根据实时并网功率和调整参数得到目标控制参数。The target parameter calculation module 40 obtains the target control parameters according to the real-time grid-connected power and the adjustment parameters.
具体为当实时并网功率与上述多个并网功率中某个并网功率相匹配时，利用与该并网功率相对应的调整参数对上述基本控制参数进行调整，从而得到目标控制参数。Specifically, when the real-time grid-connected power matches one of the plurality of grid-connected powers, the basic control parameter is adjusted by using an adjustment parameter corresponding to the grid-connected power, thereby obtaining a target control parameter.
例如，当实时并网功率为5500W时，与该实时并网功率匹配的是并网功率范围是4000W～6500W，此时选取调整参数k2＝0.8，然后利用哎调整参数k2对基本控制参数进行修正，从而得到目标控制参数，也可以说是目标比例积分控制参数。由于Kp和Ki在实际控制中是除的关系，因此利用 该调整参数单独对比例参数Kp进行修正即可，从而得到目标比例控制参数Kp’和目标积分控制参数Ki’，其中Ki＝Ki’。For example, when the real-time grid-connected power is 5500 W, the real-time grid-connected power is matched to the grid-connected power range of 4000 W to 6500 W. At this time, the adjustment parameter k2=0.8 is selected, and then the basic control parameters are corrected by using the 哎adjustment parameter k2. In order to obtain the target control parameter, it can also be said to be the target proportional integral control parameter. Since Kp and Ki are decoupled in actual control, they are utilized. The adjustment parameter may be separately corrected for the proportional parameter Kp, thereby obtaining a target proportional control parameter Kp' and a target integral control parameter Ki', where Ki = Ki'.
从上述技术方案可以看出，本实施例提供了一种光伏空调***的控制参数确定装置，该装置应用于光伏空调***的控制***，用于确定应用于该控制***的目标控制参数，具体为根据光伏空调***的实时并网功率，确定光伏空调***的受控对象的实时电感参数；将实时电感参数代入控制***的受控对象，计算出控制***的基本控制参数；预设多个分别与不同并网功率相对应的调整参数；当实时并网功率与某个并网功率相匹配时，选取与并网功率相对应的调整参数对基本控制参数进行修正，得到目标控制参数。由于本申请所确定的目标控制参数不是固定控制参数，而是根据不同并网功率确定的该不同并网功率的动态控制参数，还由于不同并网功率取决于外界参数的变化，因此这里的目标控制参数能够适应外界参数变化，从而能够解决目前的光伏空调***在外界参数变化时无法满足发用电控制要求的问题。It can be seen from the above technical solution that the present embodiment provides a control parameter determining device for a photovoltaic air conditioning system, and the device is applied to a control system of a photovoltaic air conditioning system for determining a target control parameter applied to the control system, specifically According to the real-time grid-connected power of the photovoltaic air-conditioning system, the real-time inductance parameters of the controlled object of the photovoltaic air-conditioning system are determined; the real-time inductance parameters are substituted into the controlled object of the control system, and the basic control parameters of the control system are calculated; The adjustment parameters corresponding to different grid-connected powers; when the real-time grid-connected power matches a certain grid-connected power, the adjustment parameters corresponding to the grid-connected power are selected to correct the basic control parameters, and the target control parameters are obtained. Since the target control parameter determined by the present application is not a fixed control parameter, but a dynamic control parameter of the different grid-connected power determined according to different grid-connected powers, and because different grid-connected powers depend on changes in external parameters, the target here The control parameters can adapt to changes in external parameters, which can solve the problem that the current PV air conditioning system cannot meet the requirements of power generation control when the external parameters change.
实施例三Embodiment 3
图3为本申请提供的一种光伏空调***的控制***实施例的结构框图。3 is a structural block diagram of an embodiment of a control system for a photovoltaic air conditioning system provided by the present application.
如图3所示，本实施例提供的控制***用于对光伏空调***的运行进行控制，该控制***包括有控制参数控制装置，该控制参数确定装置100用于确定目标控制参数，该目标控制参数用于作为该控制***的比例积分控制单元的比例积分控制参数。这种控制参数确定装置具体包括电感参数确定模块10、基本参数计算模块20、调整参数预置模块30和目标参数计算模块40。As shown in FIG. 3, the control system provided in this embodiment is used to control the operation of the photovoltaic air conditioning system, and the control system includes a control parameter control device, and the control parameter determining device 100 is configured to determine a target control parameter, and the target control The parameters are used as proportional integral control parameters for the proportional integral control unit of the control system. The control parameter determining device specifically includes an inductance parameter determining module 10, a basic parameter calculating module 20, an adjusting parameter preset module 30, and a target parameter calculating module 40.
电感参数计算模块10用于根据实时并网功率确定受控对象的实时电感参数。The inductance parameter calculation module 10 is configured to determine a real-time inductance parameter of the controlled object according to the real-time grid-connected power.
这里实时并网功率是指该光伏空调***与电网的交换功率，具体是指当其处于发电状态时的发电功率，当其处于用电状态时的用电功率。这里 采用实时电感参数是因为控制***的受控对象的电感会随着电流的变化而变化，这也是本申请的创新性所在。这里，该电感参数计算模块10包括并网功率获取单元11、并网电流计算单元12和电感参数计算单元13。Here, the real-time grid-connected power refers to the exchange power of the photovoltaic air-conditioning system and the power grid, specifically the power generated when it is in the power generation state, and the power power when it is in the power-on state. Here The real-time inductance parameter is used because the inductance of the controlled object of the control system changes with the current, which is also the innovation of the present application. Here, the inductance parameter calculation module 10 includes a grid-connected power acquisition unit 11, a grid-connected current calculation unit 12, and an inductance parameter calculation unit 13.
并网功率获取单元11用于获取该光伏空调***的实时并网功率，即当前时刻的并网功率，并网功率决定于并网电流和并网电压，其中并网电压取决于所并网的电网的电压。The grid-connected power acquisition unit 11 is configured to obtain the real-time grid-connected power of the photovoltaic air-conditioning system, that is, the grid-connected power at the current time, and the grid-connected power is determined by the grid-connected current and the grid-connected voltage, wherein the grid-connected voltage depends on the connected network. The voltage of the grid.
基于上述分析，并网电流计算单元12根据并网功率获取单元11获取的实时并网功率计算出实时并网电流，实时并网电流等于实时并网功率除以当前并网电压。Based on the above analysis, the grid-connected current calculation unit 12 calculates the real-time grid-connected current according to the real-time grid-connected power acquired by the grid-connected power acquisition unit 11, and the real-time grid-connected current is equal to the real-time grid-connected power divided by the current grid-connected voltage.
最后，电感参数计算单元13则根据该实时并网电流和电感电流关系曲线确定该控制***的受控对象的是电感参数，具体为设置在该受控对象内的电抗器的实时电感参数。该关系曲线为L＝a*I，其中L为该实时电感参数，a为该电抗器的电感电流系数，I为该实时并网电流。Finally, the inductance parameter calculation unit 13 determines, according to the real-time grid-connected current and the inductor current relationship curve, that the controlled object of the control system is an inductance parameter, specifically a real-time inductance parameter of the reactor disposed in the controlled object. The relationship curve is L=a*I, where L is the real-time inductance parameter, a is the inductor current coefficient of the reactor, and I is the real-time grid-connected current.
基本参数计算模块20用于将实时电感参数代入受控对象，计算出控制***的基本控制参数。The basic parameter calculation module 20 is configured to substitute the real-time inductance parameter into the controlled object to calculate the basic control parameters of the control system.
这里的实质是将该实时电感参数作为动态参数替代原有受控对象的固定参数，并根据包含该动态参数的受控对象的数学模型计算出该受控对象当前的基本控制参数。对基本控制参数的计算与目前根据固定的数学模型计算控制参数的方法相同，这里就不再赘述。The essence here is to replace the real-time inductance parameter as a dynamic parameter with the fixed parameter of the original controlled object, and calculate the current basic control parameter of the controlled object according to the mathematical model of the controlled object containing the dynamic parameter. The calculation of the basic control parameters is the same as the current method of calculating the control parameters according to a fixed mathematical model, and will not be described here.
例如，可以将2*pi*f*L代入该受控对象，从而得到基本的比例积分控制参数Kp＝1.05和Ki＝0.4。其中pi取3.1415926；f为并网功率，即电网的实时频率，一般取50赫兹；L即为上述的实时电感参数。For example, 2*pi*f*L can be substituted into the controlled object, thereby obtaining basic proportional integral control parameters Kp=1.05 and Ki=0.4. Where pi is 3.1415926; f is the grid-connected power, that is, the real-time frequency of the grid, generally taking 50 Hz; L is the above-mentioned real-time inductance parameter.
调整参数预置模块30用于根据用户的设置命令预设多个与不同并网功率范围的调整参数。The adjustment parameter preset module 30 is configured to preset a plurality of adjustment parameters of different grid-connected power ranges according to a user's setting command.
该调整参数可以为多个，分别对应于不同的并网功率范围，以针对不同的实时并网功率对该基本控制参数进行调整。The adjustment parameter may be multiple, corresponding to different grid-connected power ranges, to adjust the basic control parameters for different real-time grid-connected powers.
例如，本实施例中选取当并网功率范围为0～4000W时的调整参数k1为1；当并网功率范围为4000W～6500W时的调整参数k2为0.8；当并网 功率范围为6500W～9500W时的调整参数k3为0.7；当并网功率范围超出9500W时的调整参数k4为0.5。。For example, in this embodiment, the adjustment parameter k1 when the grid-connected power range is 0-4000 W is 1; when the grid-connected power range is 4000--6500 W, the adjustment parameter k2 is 0.8; The adjustment parameter k3 when the power range is from 6500W to 9500W is 0.7; when the grid-connected power range exceeds 9500W, the adjustment parameter k4 is 0.5. .
目标参数计算模块40根据实时并网功率和调整参数得到目标控制参数。The target parameter calculation module 40 obtains the target control parameters according to the real-time grid-connected power and the adjustment parameters.
具体为当实时并网功率与上述多个并网功率中某个并网功率相匹配时，利用与该并网功率相对应的调整参数对上述基本控制参数进行调整，从而得到目标控制参数。Specifically, when the real-time grid-connected power matches one of the plurality of grid-connected powers, the basic control parameter is adjusted by using an adjustment parameter corresponding to the grid-connected power, thereby obtaining a target control parameter.
例如，当实时并网功率为5500W时，与该实时并网功率匹配的是并网功率范围是4000W～6500W，此时选取调整参数k2＝0.8，然后利用哎调整参数k2对基本控制参数进行修正，从而得到目标控制参数，也可以说是目标比例积分控制参数。由于Kp和Ki在实际控制中是除的关系，因此利用该调整参数单独对比例参数Kp进行修正即可，从而得到目标比例控制参数Kp’和目标积分控制参数Ki’，其中Ki＝Ki’。For example, when the real-time grid-connected power is 5500 W, the real-time grid-connected power is matched to the grid-connected power range of 4000 W to 6500 W. At this time, the adjustment parameter k2=0.8 is selected, and then the basic control parameters are corrected by using the 哎adjustment parameter k2. In order to obtain the target control parameter, it can also be said to be the target proportional integral control parameter. Since Kp and Ki are divided in actual control, the proportional parameter Kp can be separately corrected by using the adjustment parameter, thereby obtaining the target proportional control parameter Kp' and the target integral control parameter Ki', where Ki = Ki'.
另外，本实施例中的控制参数确定装置还包括并网功率接收端口101、预置参数接收端口102和控制参数输出端口103。In addition, the control parameter determining apparatus in this embodiment further includes a grid-connected power receiving port 101, a preset parameter receiving port 102, and a control parameter output port 103.
并网功率接收端口101与光伏空调***的变流设备相连接，用于接收该变流设备的实时并网功率。预置参数接收端口102用于接收用户输入的多个调整参数。控制参数输出端口103用于连接控制***的受控对象的比例积分控制单元，并将目标控制参数输出到所述比例积分控制单元。The grid-connected power receiving port 101 is connected to the converter device of the photovoltaic air conditioning system for receiving real-time grid-connected power of the converter device. The preset parameter receiving port 102 is configured to receive a plurality of adjustment parameters input by the user. The control parameter output port 103 is for connecting a proportional integral control unit of the controlled object of the control system, and outputs the target control parameter to the proportional integral control unit.
从上述技术方案可以看出，本实施例提供了一种光伏空调***的控制***，该控制***包括一个控制参数确定装置，该控制参数确定装置用于确定应用于该控制***的目标控制参数，具体为根据光伏空调***的实时并网功率，确定光伏空调***的受控对象的实时电感参数；将实时电感参数代入控制***的受控对象，计算出控制***的基本控制参数；预设多个分别与不同并网功率相对应的调整参数；当实时并网功率与某个并网功率相匹配时，选取与并网功率相对应的调整参数对基本控制参数进行修正，得到目标控制参数。由于本申请所确定的目标控制参数不是固定控制参数，而是根据不同并网功率确定的该不同并网功率的动态控制参数，还由于不 同并网功率取决于外界参数的变化，因此这里的目标控制参数能够适应外界参数变化，从而能够解决目前的光伏空调***在外界参数变化时无法满足发用电控制要求的问题。As can be seen from the above technical solution, the present embodiment provides a control system for a photovoltaic air conditioning system, the control system including a control parameter determining device for determining a target control parameter applied to the control system, Specifically, according to the real-time grid-connected power of the photovoltaic air-conditioning system, the real-time inductance parameter of the controlled object of the photovoltaic air-conditioning system is determined; the real-time inductance parameter is substituted into the controlled object of the control system, and the basic control parameters of the control system are calculated; The adjustment parameters corresponding to different grid-connected powers respectively; when the real-time grid-connected power matches a certain grid-connected power, the adjustment parameters corresponding to the grid-connected power are selected to correct the basic control parameters, and the target control parameters are obtained. Since the target control parameter determined by the present application is not a fixed control parameter, but a dynamic control parameter of the different grid-connected power determined according to different grid-connected powers, The same grid-connected power depends on the change of external parameters, so the target control parameters here can adapt to changes in external parameters, which can solve the problem that the current PV air-conditioning system can not meet the requirements of power-use control when the external parameters change.
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本申请。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本申请的精神或范围的情况下，在其它实施例中实现。因此，本申请将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。 The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other. The above description of the disclosed embodiments enables those skilled in the art to make or use the application. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application is not limited to the embodiments shown herein, but is to be accorded the broadest scope of the principles and novel features disclosed herein.

Claims (9)

  1. 一种光伏空调***的控制参数确定方法，应用于所述光伏空调***的控制***，其特征在于，所述控制参数确定方法具体包括步骤：A control parameter determining method for a photovoltaic air conditioning system is applied to a control system of the photovoltaic air conditioning system, wherein the method for determining a control parameter specifically comprises the steps of:
    根据所述光伏空调***的实时并网功率，确定所述控制***的受控对象的实时电感参数；Determining a real-time inductance parameter of the controlled object of the control system according to the real-time grid-connected power of the photovoltaic air conditioning system;
    将所述实时电感参数代入所述控制***的受控对象，计算出所述控制***的基本控制参数；Substituting the real-time inductance parameter into a controlled object of the control system to calculate a basic control parameter of the control system;
    预设多个分别与不同并网功率范围相对应的调整参数；Presetting a plurality of adjustment parameters respectively corresponding to different grid-connected power ranges;
    当所述实时并网功率与某个所述某个并网功率范围相匹配时，选取与所述并网功率范围相对应的调整参数对所述基本控制参数进行修正，得到目标控制参数。And when the real-time grid-connected power is matched with a certain one of the grid-connected power ranges, the adjustment parameter corresponding to the grid-connected power range is selected to correct the basic control parameter to obtain a target control parameter.
  2. 如权利要求1所述的控制参数确定方法，其特征在于，所述根据所述光伏空调***的实时并网功率，确定所述光伏空调***的实时电感参数，包括：The control parameter determining method according to claim 1, wherein the determining the real-time inductance parameter of the photovoltaic air conditioning system according to the real-time grid-connected power of the photovoltaic air conditioning system comprises:
    获取所述光伏空调***的实时并网功率；Obtaining real-time grid-connected power of the photovoltaic air conditioning system;
    根据所述实时并网功率计算出所述光伏空调***的实时并网电流；Calculating a real-time grid-connected current of the photovoltaic air-conditioning system according to the real-time grid-connected power;
    根据所述实时并网电流确定的所述实时电感参数。The real-time inductance parameter determined according to the real-time grid-connected current.
  3. 如权利要求2所述的控制参数确定方法，其特征在于，所述根据所述实时并网电流确定的所述实时电感参数，包括：The control parameter determining method according to claim 2, wherein the real-time inductance parameter determined according to the real-time grid-connected current comprises:
    根据所述实时并网电流，从所述受控对象中电抗器的电感电流关系曲线中确定所述实时电感参数。And determining the real-time inductance parameter from an inductor current relationship curve of the reactor in the controlled object according to the real-time grid-connected current.
  4. 一种光伏空调***的控制参数确定装置，应用于所述光伏空调***的控制***，其特征在于，所述控制参数确定装置具体包括：A control parameter determining device for a photovoltaic air conditioning system, which is applied to the control system of the photovoltaic air conditioning system, wherein the control parameter determining device specifically includes:
    电感参数确定模块，用于根据所述光伏空调***的实时并网功率，确定所述控制***的受控对象的实时电感参数；An inductance parameter determining module, configured to determine a real-time inductance parameter of the controlled object of the control system according to the real-time grid-connected power of the photovoltaic air conditioning system;
    基本参数计算模块，用于将所述实时电感参数代入所述控制***的受控对象，计算出所述控制***的基本控制参数；a basic parameter calculation module, configured to substitute the real-time inductance parameter into a controlled object of the control system, and calculate a basic control parameter of the control system;
    调整参数预置模块，用于预设多个与不同并网功率范围相对应的调整 参数；Adjusting the parameter preset module to preset multiple adjustments corresponding to different grid-connected power ranges parameter;
    目标参数计算模块，用于当所述实时并网功率与某个所述并网功率范围相匹配时，选取与所述并网功率范围相对应的调整参数对所述控制参数进行调整，得到目标控制参数。a target parameter calculation module, configured to: when the real-time grid-connected power matches a certain grid-connected power range, select an adjustment parameter corresponding to the grid-connected power range to adjust the control parameter to obtain a target Control parameters.
  5. 如权利要求4所述的控制参数确定装置，其特征在于，所述电感参数确定模块包括：The control parameter determining apparatus according to claim 4, wherein the inductance parameter determining module comprises:
    并网功率获取单元，用于获取所述光伏空调***的实时并网功率；a grid-connected power acquisition unit, configured to acquire real-time grid-connected power of the photovoltaic air-conditioning system;
    并网电流计算单元，用于根据所述实时并网功率计算出所述光伏空调***的实时并网电流；a grid-connected current calculation unit, configured to calculate a real-time grid-connected current of the photovoltaic air-conditioning system according to the real-time grid-connected power;
    电感参数计算单元，用于根据所述实时并网电流确定的所述实时电感参数。And an inductance parameter calculation unit, configured to determine the real-time inductance parameter according to the real-time grid-connected current.
  6. 如权利要求5所述的控制参数确定装置，其特征在于，所述电感参数计算单元具体用于所述实时并网电流，从所述受控对象中电抗器的电感电流关系曲线中确定所述实时电感参数。The control parameter determining apparatus according to claim 5, wherein the inductance parameter calculating unit is specifically configured to use the real-time grid-connected current, and determine the impedance current relationship curve of a reactor in the controlled object Real-time inductance parameters.
  7. 一种光伏空调***的控制***，所述控制***包括控制参数确定装置，所述控制参数确定装置包括电感参数确定模块、基本参数计算模块、调整参数预置模块和目标参数计算模块，所述电感参数确定模块用于根据所述光伏空调***的实时并网功率，确定所述控制***的受控对象的实时电感参数；所述基本参数计算模块用于将所述实时电感参数代入所述控制***的受控对象，计算出所述控制***的基本控制参数；所述调整参数预置模块用于预设多个与不同并网功率范围相对应的调整参数；所述目标参数计算模块用于当所述实时并网功率与某个所述并网功率范围相匹配时，选取与所述并网功率范围相对应的调整参数对所述控制参数进行调整，得到目标控制参数，其特征在于，所述控制参数确定装置还包括：A control system for a photovoltaic air conditioning system, the control system comprising control parameter determining means, the control parameter determining device comprising an inductance parameter determining module, a basic parameter calculating module, an adjusting parameter preset module and a target parameter calculating module, the inductor The parameter determining module is configured to determine a real-time inductance parameter of the controlled object of the control system according to the real-time grid-connected power of the photovoltaic air conditioning system; the basic parameter calculation module is configured to substitute the real-time inductance parameter into the control system The controlled object calculates a basic control parameter of the control system; the adjustment parameter preset module is configured to preset a plurality of adjustment parameters corresponding to different grid-connected power ranges; the target parameter calculation module is used to When the real-time grid-connected power is matched with a certain of the grid-connected power ranges, the adjustment parameters corresponding to the grid-connected power range are selected to adjust the control parameters to obtain target control parameters, which are characterized by The control parameter determining device further includes:
    并网功率接收端口，用于接收所述实时并网功率；a grid-connected power receiving port, configured to receive the real-time grid-connected power;
    预置参数接收端口，用于接收用户输入的多个所述调整参数；a preset parameter receiving port, configured to receive a plurality of the adjustment parameters input by a user;
    控制参数输出端口，用于连接所述控制***的受控对象的比例积分控制单元，并将所述目标控制参数输出到所述比例积分控制单元。And a control parameter output port for connecting a proportional integral control unit of the controlled object of the control system, and outputting the target control parameter to the proportional integral control unit.
  8. 如权利要求7所述的控制参数确定装置，其特征在于，所述电感参 数确定模块包括：The control parameter determining device according to claim 7, wherein said inductance parameter The number determination module includes:
    并网功率获取单元，用于获取所述光伏空调***的实时并网功率；a grid-connected power acquisition unit, configured to acquire real-time grid-connected power of the photovoltaic air-conditioning system;
    并网电流计算单元，用于根据所述实时并网功率计算出所述光伏空调***的实时并网电流；a grid-connected current calculation unit, configured to calculate a real-time grid-connected current of the photovoltaic air-conditioning system according to the real-time grid-connected power;
    电感参数计算单元，用于根据所述实时并网电流确定的所述实时电感参数。And an inductance parameter calculation unit, configured to determine the real-time inductance parameter according to the real-time grid-connected current.
  9. 如权利要求7所述的控制参数确定装置，其特征在于，所述电感参数计算单元具体用于所述实时并网电流，从所述受控对象中电抗器的电感电流关系曲线中确定所述实时电感参数。 The control parameter determining apparatus according to claim 7, wherein the inductance parameter calculating unit is specifically configured to use the real-time grid-connected current, and determine the impedance current relationship curve of a reactor in the controlled object Real-time inductance parameters.
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